Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristic
Heater Voltage
13.5 V
Heater Current
20 mA
Voltage Tetrode ·Tetrode
7167
Sharp-cutoff VHF tetrode designed for amplifier service in mobile communications equipment, providing high-frequency signal gain in compact communications receivers or transmitters.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 7EW
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 13.5 V / 90 mA
Description
Sharp-cutoff VHF tetrode for mobile communications equipment.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7EW
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 13.5 V
- Nominal heater current
- 90 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7EW - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G1 | A | G1 — Control Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
| PIN2IS | A | IS — Internal ScreenGroup 7EW2 EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
| PIN2K | A | K — CathodeGroup 7EW2 EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
| PIN3H | — | H — Heater EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
| PIN4H | — | H — Heater EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
| PIN5P | A | P — Plate (Anode) EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
| PIN6G2 | A | G2 — Screen Grid EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
| PIN7IS | A | IS — Internal ScreenGroup 7EW7 EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
| PIN7K | A | K — CathodeGroup 7EW7 EIA transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 7EW |
Section ratings
1 physical section, each with unique specifications.
Section 1
Tetrode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 125000 Ω
- Transconductance
- 0.01 S
- Max plate voltage
- 180 V
- Max screen voltage
- 180 V
- Max plate dissipation
- 2 W
- Max screen dissipation
- 0.5 W
- Max cathode current
- 20 mA
Published ratings and characteristics promoted from the supplied Sylvania source.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 02
1965 Sylvania Electronic Tubes Vol3
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristic
Heater Voltage
13.5 V
Heater Current
90 mA
Heater Voltage Minimum
11.8 V
Heater Voltage Maximum
15.5 V
GridToPlateCapacitanceMaximum
0.03 pF
Input Capacitance
4.4 pF
Output Capacitance
2.74 pF
Plate Voltage
125 V
Screen Voltage
80 V
Plate Current
10 mA
Screen Current
2 mA
Plate Resistance
125000 ohm
Transconductance
10000 uS
GridCutoffBias
-4.5 V